// 对象:在JS中的对象分为两种：普通对象，函数对象。
function fn(){

};
fn.age = 12;
fn.render = function(){
    console.log("render");
}
console.log(fn.name);// fn
console.log(fn.age);// 12
fn.render();// render


class Fn {
    static age = 12;
    static render = function(){
        console.log("render")
    }
}


let a = 1;
function my(userName){
    a = 100;

    return 1;
}
my("aa")